To make it work as an NSString, you should cast it to an NSString using the as operator before using it. For example, this code fragment: ... Constructs and returns an NSString object that is the result of interposing a given separator between the elements of the array. String concatenation is one of the most commonly-used techniques in modern programming. A C string representation of the receiver using the encoding specified by encoding. Convert NSString to UTF-8 C string. Discussion. Accessing characters works the same way in Swift for an NSString: let str: NSString = "hello" let charStr = str.UTF8String // UnsafePointer For a Swift String object things are a little different: let str = "hello" let charStr = str.cStringUsingEncoding(NSUTF8StringEncoding) NSString to char array objective-c. This C string is a pointer to a structure inside the string object, which may have a lifetime shorter than the string object and will certainly not have a longer lifetime. creates a Swift String, not an NSString. You can put the actual Unicode data in the string for localized text, as in NSString *hello = @"こんにちは";.You can also insert \u or \U in the string for non-graphic characters.. Objective-C string constant is created at compile time and exists throughout your program’s execution. The simplest way to create a string object is to use the Objective-C @"" Two additional types of Objective-C string … The simplest way to create a string object is to use the Objective-C @"..." construct − NSString *greeting = @"Hello"; A simple example for creating and printing a string is shown below. Casting to NSString is required to resolve ambiguity between passing Kotlin string as C string and as NSString (casting to Any works too). NSString *string = @"example"; NSUInteger length = string.length; // length equals 7 As in the Splitting Example, keep in mind that NSString uses UTF-16 to represent characters. The length is … Objective-C string. NSString *newStr = [s stringByAppendingFormat:@"%d %f", intVar, floatVar]; Append NSString string to NSString. In most cases, this is accomplished using an addition or concatenation operator. Returns NULL if the receiver cannot be losslessly converted to encoding. This got changed in Swift 1.2 so that you need to explicitly cast between these data types, and this remains the same in Swift today. const char *cstr = [s UTF8String]; Append formatted string to NSString. NSString has a length property to get the number of characters. Similarly, if the string begins or ends with the separator, the first or last substring, respectively, is empty. Solution 2: To go from String to NSString use the following constructor: For possible values, see NSString Encoding. The string in Objective-C programming language is represented using NSString and its subclass NSMutableString provides several ways for creating string objects. The encoding for the returned C string. String Length. Return Value. Named arguments are required to resolve ambiguity between initWithFormat: and initWithFormat:locale:. Therefore, you should copy the C string if it needs to be stored outside of the memory context in which you use this property. This is different than calling a method written in Objective-C and supplying a String instead of an NSString as a parameter. Note, when creating a string constant in this fashion, you should use UTF-8 characters. However, you do not do it this way in Objective-C. Strings in Objective-C are handled using the classes NSString and NSMutableString, and require a little more effort to work with on […] In Swift, a char array is bridged as an UnsafePointer. When Swift originally launched, NSString (older iOS strings) and native Swift strings were completely interchangeable, as were NSArray and Swift arrays, plus NSDictionary and Swift dictionaries. The string in Objective-C programming language is represented using NSString and its subclass NSMutableString provides several ways for creating string objects. Alternatively one …

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